V. V. Perfiljev, K. N. Klimov

It is considered antenna attachment for test the active phased array. Special feature of this antenna attachment is possibility operable with big power active phased array. Antenna attachment include curtain, 100 receiving antennas, receiving radiation phased array, 100 attenuators and systems of the summation received signals. 44 four-channel balanced dividers enter in composition of the system of the summation, which are built on base three balanced microstrip halver. Use the balanced divider is the uncoupling conditioned by necessity of the parasitic resonance and uncoupling between output channel. At design of the topologies balance divider necessary to take into account the following requirements: number channel division to powers, WSVR at the input, input resistance of the divisions, uncoupling on channel of the division, power level at the input, mass dimension characteristic. Considering characteristics of balanced divider, theoretically calculated and experimental measurement, relations WSVR, dividing coefficient and phase-frequency characteristic from frequency for balance divider. Follows to note the similar nature of their behaviour that shows correctness chosen concepts of the designing device, correctness called on calculation and experiment. The differences of the features for calculated and experimental designed divisor are basically bound with technological inaccuracy at fabrication of the models of the divider.